Cash vs. Accrual Accounting

Learn which accounting method is better for your business.

By , J.D. · USC Gould School of Law

The cash method and the accrual method (sometimes called cash basis and accrual basis) are the two principal methods of keeping track of a business's income and expenses. In most cases, you can choose which method to use. Learn how they work and the advantages and disadvantages of each so you can choose the better one for your business.

In a nutshell, these methods differ only in the timing of when transactions, including sales and purchases, are credited or debited to your accounts. Here's how each works:

The Cash Method

The cash method is the more commonly used method of accounting in small business. Under the cash method, income is not counted until cash (or a check) is actually received, and expenses are not counted until they are actually paid.

The Accrual Method

Under the accrual method, transactions are counted when the order is made, the item is delivered, or the services occur, regardless of when the money for them (receivables) is actually received or paid. In other words, income is counted when the sale occurs, and expenses are counted when you receive the goods or services. You don't have to wait until you see the money, or actually pay money out of your checking account, to record a transaction.

Determining the Transaction Date

With the accrual method, sometimes it's not easy to know when the sale or purchase has occurred. The key date is the job completion date.

When to record income. Not until you finish a service, or deliver all the goods a contract calls for, do you record the income in your books.

When to record an expense. Likewise, you don't record an item as an expense until the service is completed or all goods have been received and installed, if necessary. (If a job is mostly completed but will take another 30 days to add the finishing touches, technically it doesn't go on your books until the 30 days pass.)

Choosing an Accounting Method

When you can choose either method. Most small businesses (with sales of less than $5 million per year) are free to adopt either accounting method.

When you must use the accrual method. You must use the accrual method if:

  • your business has sales of more than $5 million per year, or
  • your business stocks an inventory of items that you will sell to the public and your gross receipts are over $1 million per year. Inventory includes any merchandise you sell, as well as supplies that will physically become part of an item intended for sale.

Whichever method you use, it's important to realize that either one gives you only a partial picture of the financial status of your business.

Advantages and Disadvantages of the Accrual Method

While the accrual method shows the ebb and flow of business income and debts more accurately, it may leave you in the dark as to what cash reserves are available, which could result in a serious cash flow problem. For instance, your income ledger may show thousands of dollars in sales, while in reality your bank account is empty because your customers haven't paid you yet.

Advantages and Disadvantages of the Cash Method

And though the cash method provides a more accurate picture of how much actual cash your business has, it may offer a misleading picture of longer-term profitability. Under the cash method, for instance, your books may show one month to be spectacularly profitable, when actually sales have been slow and, by coincidence, a lot of credit customers paid their bills in that month.

To have a firm and true understanding of your business's finances, you need more than just a collection of monthly totals; you need to understand what your numbers mean and how to use them to answer specific financial questions.

Claiming Tax Deductions

The most significant way your business is affected by the accounting method you choose involves the tax year in which income and particular expense items will be counted.

For instance, if you incur expenses in the one tax year but don't pay them until the following tax year, you won't be able to claim deductions for them in the year you incur the expenses if you use the cash method. But you would be able to claim them that year if you use the accrual method, because under that system you record transactions when they occur, not when money actually changes hands.

Tax Years and Accounting Periods

Income and expenses must be reported to the IRS for a specific period of time, called your tax year, your accounting period, or your fiscal year.

Unless there is a valid business reason to use a different period, or your business is a corporation, you must use the calendar year -- beginning on January 1 and ending on December 31. Most business owners use the calendar year for their tax year simply because they find it easy and natural to use. If you want to use a different period, you must request permission from the IRS by filing Form 8716, Election to Have a Tax Year Other Than a Required Tax Year.

Also, your fiscal year can't begin and end on just any day of the month: It must begin on the first day of a month and end on the last day of the previous month one year later.

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